Exercise equipment, motion detection sensor, motion detection device, and motion analysis system

ABSTRACT

An exercise equipment includes an exercise equipment unit and a sensor attachment unit for the attachment of a motion detection sensor that detects the motion of the exercise equipment unit. The exercise equipment unit and the sensor attachment unit are integrally provided. The sensor attachment unit includes a second fitting portion that is fitted into a first fitting portion provided in the motion detection sensor.

BACKGROUND

1. Technical Field

The present invention relates to an exercise equipment, a motion detection sensor, a motion detection device, and a motion analysis system.

2. Related Art

As a method of analyzing and evaluating the motion according to a swing of a golf club, a baseball bat, or a racket for tennis and the like, a human body in exercise using them or the like, a method of analysis based on an image captured by a camera has been known. In the analysis using an image, there is an accuracy limitation. For this reason, it has been attempted to perform more accurate motion analysis using a motion detection sensor including an acceleration sensor or a gyro sensor.

There are various methods of attaching a motion detection sensor to an exercise equipment.

For example, JP-A-2014-097263 discloses a sensor fixture for attaching a motion detection sensor to an exercise equipment. In JP-A-2014-097263, the motion detection sensor is attached to the exercise equipment through the sensor fixture.

JP-A-2015-089387 discloses a sensor unit including a fixing structure, which includes a holding section in which a shaft of a golf club can be housed from the radially outer periphery.

U.S. Pat. No. 8,840,484 discloses a sensor including a clamp for attachment to an exercise equipment.

Thus, an attachment for attaching a motion detection sensor to an exercise equipment is disclosed in JP-A-2014-097263, JP-A-2015-089387, and U.S. Pat. No. 8,840,484.

The motion detection sensor should perform relative alignment (calibration) of the detection axis of the motion detection sensor with respect to a golf club by acquiring the information of the initial state (a posture, a position, and the like) of the sensor while being attached to the exercise equipment before the detection of motion.

In the attachments disclosed in JP-A-2014-097263, JP-A-2015-089387, and U.S. Pat. No. 8,840,484, however, in the case of detaching the motion detection sensor and the attachment from the exercise equipment and attaching the motion detection sensor to the exercise equipment again using the attachment, it is difficult to attach the motion detection sensor to exactly the same position of the exercise equipment. That is, in the attachments disclosed in JP-A-2014-097263, JP-A-2015-089387, and U.S. Pat. No. 8,840,484, since positional reproducibility when attaching the motion detection sensor again after detaching the motion detection sensor is low, deviation of the attachment position of the motion detection sensor occurs. For this reason, calibration of the motion detection sensor had to be performed whenever the motion detection sensor and the attachment were attached to the exercise equipment.

SUMMARY

An advantage of some aspects of the invention is to provide an exercise equipment, a motion detection sensor, and a motion detection device capable of reducing the number of times of calibration. Another advantage of some aspects of the invention is to provide a motion analysis system including the motion detection device described above.

The invention can be implemented as the following forms or application examples.

Application Example 1

An exercise equipment according to this application example includes an exercise equipment unit; and a sensor attachment unit for attachment of a motion detection sensor that detects motion of the exercise equipment unit. The exercise equipment unit and the sensor attachment unit are integrally provided. The sensor attachment unit includes a second fitting portion that is fitted into a first fitting portion provided in the motion detection sensor.

In such an exercise equipment, since the exercise equipment unit and the sensor attachment unit are integrally provided, positional reproducibility when attaching the motion detection sensor again after detaching the motion detection sensor is high. Therefore, according to such an exercise equipment, it is not necessary to calibrate the motion detection sensor whenever the motion detection sensor is attached to the exercise equipment. As a result, it is possible to reduce the number of times of calibration.

Application Example 2

In the exercise equipment according to the application example, the first fitting portion may be a recessed portion provided in the motion detection sensor, and the second fitting portion may be a protruding portion fitted into the recessed portion.

In such an exercise equipment, it is possible to easily improve the positional reproducibility when attaching the motion detection sensor again after detaching the motion detection sensor.

Application Example 3

The exercise equipment according to the application example may further include a position adjustment unit that adjusts a position of the sensor attachment unit.

In such an exercise equipment, since the position adjustment unit is included, it is possible to adjust the relative position (fixing position) of the motion detection sensor with respect to the exercise equipment. Therefore, for example, it is possible to accurately match the detection axis of the motion detection sensor to a desired direction. As a result, it is possible to accurately detect the motion of the exercise equipment.

Application Example 4

In the exercise equipment according to the application example, the position of the second fitting portion may be adjusted by the position adjustment unit.

In such an exercise equipment, it is possible to accurately detect the motion of the exercise equipment, for example, by accurately matching the detection axis of the motion detection sensor to a desired direction.

Application Example 5

In the exercise equipment according to the application example, the exercise equipment unit may include a grip portion that is gripped by a user, and the sensor attachment unit and the grip portion may be integrally provided.

In such an exercise equipment, it is not necessary to calibrate the motion detection sensor whenever the motion detection sensor is attached to the exercise equipment. As a result, it is possible to reduce the number of times of calibration.

Application Example 6

In the exercise equipment according to the application example, the exercise equipment unit may include a shaft portion, and the sensor attachment unit and the shaft portion may be integrally provided.

In such an exercise equipment, it is not necessary to calibrate the motion detection sensor whenever the motion detection sensor is attached to the exercise equipment. As a result, it is possible to reduce the number of times of calibration.

Application Example 7

A motion detection sensor according to this application example includes an attached portion that is attached to a sensor attachment unit provided integrally with an exercise equipment unit. The attached portion may include a first fitting portion that is fitted into a second fitting portion provided in the sensor attachment unit.

Since such motion detection sensor includes the attached portion that is attached to the sensor attachment unit provided integrally with the exercise equipment unit, it is not necessary to calibrate the motion detection sensor whenever the motion detection sensor is attached to the exercise equipment. As a result, it is possible to reduce the number of times of calibration.

Application Example 8

In the motion detection sensor according to the application example, the second fitting portion may be a protruding portion provided in the sensor attachment unit, and the first fitting portion may be a recessed portion fitted into the protruding portion.

In such a motion detection sensor, it is possible to easily improve the positional reproducibility when attaching the motion detection sensor to the exercise equipment again after detaching the motion detection sensor from the exercise equipment.

Application Example 9

A motion detection device according to this application example includes: an exercise equipment; and a motion detection sensor attached to the exercise equipment. The exercise equipment includes an exercise equipment unit and a sensor attachment unit for attachment of the motion detection sensor. The exercise equipment unit and the sensor attachment unit are integrally provided. The motion detection sensor includes an attached portion that is attached to the sensor attachment unit. The attached portion includes a first fitting portion that is fitted into a second fitting portion provided in the sensor attachment unit.

Since such a motion detection device includes an exercise equipment in which the exercise equipment unit and the sensor attachment unit are integrally provided, positional reproducibility when attaching the motion detection sensor to the exercise equipment again after detaching the motion detection sensor from the exercise equipment is high. Therefore, according to such a motion detection device, it is not necessary to calibrate the motion detection sensor whenever the motion detection sensor is attached to the exercise equipment. As a result, it is possible to reduce the number of times of calibration.

Application Example 10

A motion analysis system according to this application example includes: the motion detection device described above; and a computing device that analyzes motion of the exercise equipment based on a detection result of the motion detection device.

Since such a motion analysis system includes an exercise equipment in which the exercise equipment unit and the sensor attachment unit are integrally provided, positional reproducibility when attaching the motion detection sensor to the exercise equipment again after detaching the motion detection sensor from the exercise equipment is high. Therefore, according to such a motion analysis system, it is not necessary to calibrate the motion detection sensor whenever the motion detection sensor is attached to the exercise equipment. As a result, it is possible to reduce the number of times of calibration.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements.

FIG. 1 is a perspective view schematically showing a motion detection device according to a first embodiment.

FIG. 2 is a perspective view schematically showing a golf club of the motion detection device according to the first embodiment.

FIG. 3 is a perspective view schematically showing a sensor attachment unit of the motion detection device according to the first embodiment.

FIG. 4 is a perspective view schematically showing a sensor attachment unit of the motion detection device according to the first embodiment.

FIG. 5 is a perspective view schematically showing a state in which a motion detection sensor is attached to the sensor attachment unit of the motion detection device according to the first embodiment.

FIG. 6 is a schematic plan view when the motion detection sensor of the motion detection device according to the first embodiment is viewed from the upper surface side.

FIG. 7 is a schematic plan view when the motion detection sensor of the motion detection device according to the first embodiment is viewed from the lower surface side.

FIG. 8 is a schematic diagram when the motion detection sensor of the motion detection device according to the first embodiment is viewed from the F direction shown in FIG. 6.

FIG. 9 is a schematic sectional view of the motion detection sensor of the motion detection device according to the first embodiment.

FIG. 10 is a schematic sectional view of the motion detection sensor of the motion detection device according to the first embodiment.

FIG. 11 is a diagram schematically showing how the motion detection sensor is attached to the golf club of the motion detection device according to the first embodiment.

FIG. 12 is a schematic diagram showing a state in which the motion detection sensor is attached to the golf club of the motion detection device according to the first embodiment.

FIG. 13 is a schematic diagram showing a state in which the motion detection sensor is attached to the golf club of the motion detection device according to the first embodiment.

FIG. 14 is a perspective view schematically showing a golf club of a motion detection device according to a first modification example of the first embodiment.

FIG. 15 is a perspective view schematically showing the motion detection device according to the first modification example of the first embodiment.

FIG. 16 is a schematic diagram showing a state in which a motion detection sensor is attached to a golf club in a motion detection device according to a second modification example of the first embodiment.

FIG. 17 is a diagram schematically showing the motion detection device according to the second modification example of the first embodiment.

FIG. 18 is a perspective view schematically showing a sensor attachment unit of a golf club of a motion detection device according to a third modification example of the first embodiment.

FIG. 19 is a perspective view schematically showing a sensor attachment unit of the golf club of the motion detection device according to the third modification example of the first embodiment.

FIG. 20 is a perspective view schematically showing a sensor attachment unit of the golf club of the motion detection device according to the third modification example of the first embodiment.

FIG. 21 is a perspective view schematically showing a motion detection device according to a second embodiment.

FIG. 22 is a perspective view schematically showing the motion detection device according to the second embodiment.

FIG. 23 is a perspective view schematically showing a motion detection device according to a modification example of the second embodiment.

FIG. 24 is a perspective view schematically showing the motion detection device according to the modification example of the second embodiment.

FIG. 25 is a perspective view schematically showing a motion detection device according to a third embodiment.

FIG. 26 is a perspective view schematically showing the motion detection device according to the third embodiment.

FIG. 27 is an external view showing a motion analysis system according to a fourth embodiment.

FIG. 28 is a functional block diagram of the motion analysis system according to the fourth embodiment.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying diagrams. In addition, the embodiments described below are not intended to limit the contents of the invention defined by the appended claims. In addition, all of the configurations described below are not necessarily essential components of the invention.

1. First Embodiment 1.1. Motion Detection Device

A motion detection device according to the present embodiment includes an exercise equipment and a motion detection sensor.

The exercise equipment according to the present embodiment is used in exercise. Here, the exercise refers to moving the body, for example, playing a sport. As such an exercise equipment, an equipment used in various kinds of sports can be exemplified. For example, a golf club, a baseball bat, a tennis racket, a bamboo sword, and the like can be exemplified. The exercise equipment according to the present embodiment may be apart of the equipment used in various kinds of sports. As such an exercise equipment, a grip portion of a golf club, a shaft portion of a golf club, a grip portion of a tennis racket, a shaft portion of a tennis racket, and the like can be exemplified. Hereinafter, a case where the exercise equipment according to the present embodiment is a golf club will be described.

FIG. 1 is a perspective view schematically showing a motion detection device 100 according to a first embodiment.

As shown in FIG. 1, the motion detection device 100 includes a motion detection sensor 10 and a golf club 20 (an example of the exercise equipment). FIG. 1 shows a state in which the motion detection sensor 10 is attached to the golf club 20.

In the motion detection device 100, the motion detection sensor 10 attached to the golf club 20 detects the motion (movement) of the golf club 20. Here, the motion of the golf club 20 refers to the movement of a spatial position, a change in shape, a change in posture, rotation, vibration, and the like of the golf club 20.

1.1.1. Golf Club

FIG. 2 is a perspective view schematically showing the golf club 20 of the motion detection device 100 according to the first embodiment.

As shown in FIG. 2, the golf club 20 includes an exercise equipment unit 22 and a sensor attachment unit 24.

The exercise equipment unit 22 is a portion used for exercise (golf game) in the golf club 20. The exercise equipment unit 22 includes a grip portion 22 a, a shaft portion 22 b, and a head portion 22 c.

The grip portion 22 a is a portion gripped by the user. The grip portion 22 a is attached to the shaft portion 22 b. The grip portion 22 a covers the shaft portion 22 b. The grip portion 22 a is formed of, for example, an elastic member, such as rubber or urethane elastomer. In the illustrated example, the grip portion 22 a is a rubber grip inserted into the shaft portion 22 b. In addition, although not shown, the grip portion 22 a may be wound around the shaft portion 22 b in a tape shape.

The shaft portion 22 b is a member for connecting the head portion 22 c and the grip portion 22 a to each other. The shaft portion 22 b has a rod shape, for example. Examples of the material of the shaft portion 22 b include metal, such as stainless steel, and a composite material of carbon fiber and epoxy resin.

The head portion 22 c has a face for hitting a golf ball. The head portion 22 c is provided at the distal end of the shaft portion 22 b. The material of the head portion 22 c is, for example, metal, such as iron, stainless steel, and a titanium alloy.

The sensor attachment unit 24 is a member for the attachment of the motion detection sensor 10.

FIGS. 3 and 4 are perspective views schematically showing the sensor attachment unit 24. FIG. 5 is a perspective view schematically showing a state in which the motion detection sensor 10 is attached to the sensor attachment unit 24. In FIGS. 3 to 5, a part of the exercise equipment unit 22 is not shown.

As shown in FIGS. 3 and 4, the sensor attachment unit 24 and the exercise equipment unit 22 are integrally provided. Here, “the sensor attachment unit 24 and the exercise equipment unit 22 are integrally provided” refers to the sensor attachment unit 24 and at least a part of members forming the exercise equipment unit 22 are integrated into one. For example, in a case where the sensor attachment unit 24 and at least a part of members of the exercise equipment unit 22 are configured so as not to be detachable from each other, it can be said that the sensor attachment unit 24 and the exercise equipment unit 22 are integrally provided. In addition, for example, in a case where the sensor attachment unit 24 and at least a part of members of the exercise equipment unit 22 are integrally formed by insert molding, outsert molding, or the like, it can be said that the sensor attachment unit 24 and the exercise equipment unit 22 are integrally provided.

In the illustrated example, the sensor attachment unit 24 and the grip portion 22 a are integrally provided. In a case where the sensor attachment unit 24 and the grip portion 22 a are formed of different materials, the sensor attachment unit 24 and the grip portion 22 a are integrally molded by, for example, insert molding or outsert molding. In a case where the sensor attachment unit 24 and the grip portion 22 a are formed of the same material, the sensor attachment unit 24 and the grip portion 22 a are integrally molded using one mold, for example. Thus, since the sensor attachment unit 24 and the grip portion 22 a are integrally molded, the sensor attachment unit 24 and the grip portion 22 a are integrally formed. In addition, the sensor attachment unit 24 and the grip portion 22 a may be integrally formed by being fixed by an adhesive, a screw, or the like.

In addition, although not shown, the sensor attachment unit 24 and the shaft portion 22 b may be integrally provided.

Although not particularly limited, materials of the sensor attachment unit 24 are polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, ABS resin, fluorine-based resin, acrylic resin, and a synthetic resin such as a copolymer thereof. In addition, the material of the sensor attachment unit 24 may be metal. The material of the sensor attachment unit 24 may be different from the material of the grip portion 22 a, or may be the same as the material of the grip portion 22 a.

As shown in FIGS. 3 and 4, the sensor attachment unit 24 includes base portions 26 a and 26 b and flange portions 28 a and 28 b (an example of a second fitting portion) that are fitted into grooves 11 d and 11 e (an example of a first fitting portion; refer to FIG. 9) provided in the motion detection sensor 10.

Each of the first and second base portions 26 a and 26 b is fixed to the grip portion 22 a. The first and second base portions 26 a and 26 b are provided so as to extend in parallel along the axis of the shaft portion 22 b.

The first flange portion 28 a is provided in the first base portion 26 a. The first flange portion 28 a protrudes from the first base portion 26 a. The second flange portion 28 b is provided in the second base portion 26 b. The second flange portion 28 b protrudes from the second base portion 26 b.

The flange portions 28 a and 28 b function as fitting portions that are fitted into the grooves 11 d and 11 e provided in the motion detection sensor 10. By fitting the flange portions 28 a and 28 b into the grooves 11 d and 11 e, it is possible to stably attach the motion detection sensor 10 to the golf club 20 so that falling off, positional deviation, rotation, and the like do not occur.

The details of the attachment of the motion detection sensor 10 to the golf club 20 will be described later in “1.1.3. Attachment of a motion detection sensor to a golf club”.

In the golf club 20 according to the present embodiment, the exercise equipment unit 22 and the sensor attachment unit 24 are integrally provided. Therefore, in the golf club 20 according to the present embodiment, deviation of the attachment position of the motion detection sensor 10 when attaching the motion detection sensor 10 to the golf club 20 again after detaching the motion detection sensor 10 from the golf club 20 is small (or there is no deviation of the position) compared with that in a case where the exercise equipment unit 22 and the sensor attachment unit 24 are not integrally provided. That is, in the golf club 20 according to the present embodiment, positional reproducibility when attaching the motion detection sensor 10 to the golf club 20 again after detaching the motion detection sensor 10 from the golf club 20 is high.

Therefore, according to the golf club 20 of the present embodiment, it is not necessary to calibrate the motion detection sensor 10 whenever the motion detection sensor 10 is attached to the golf club 20. As a result, it is possible to reduce the number of times of calibration.

The calibration of the motion detection sensor 10 refers to the relative alignment of the detection axis of the motion detection sensor 10 with respect to the golf club 20. The calibration of the motion detection sensor 10 is performed by a computing device (PC 700; refer to FIG. 28) to be described later. The computing device is a device that analyzes the motion of the golf club 20 based on the detection result of the motion detection sensor 10. The computing device defines a coordinate system (global coordinate system) in which the position of the head portion 22 c of the golf club 20 at the time of address (at rest) is the origin, a target line indicating the target direction of the ball is a first axis, an axis on the horizontal plane perpendicular to the first axis is a second axis, and a vertically upward direction is a third axis, for example. Thus, defining the global coordinate system is called the calibration of the motion detection sensor 10.

In the golf club 20 according to the present embodiment, since the exercise equipment unit 22 and the sensor attachment unit 24 are integrally provided, it is possible to fix the motion detection sensor 10 more reliably compared with a case where the exercise equipment unit 22 and the sensor attachment unit 24 are not integrally provided. For this reason, in the golf club 20 according to the present embodiment, positional deviation of the motion detection sensor 10 due to the inertial force or the impact force, which is applied to the motion detection sensor 10 by the swing of the golf club 20, is difficult to occur. Therefore, in the golf club 20 according to the present embodiment, it is not necessary to calibrate the motion detection sensor 10 for each swing. As a result, it is possible to reduce the number of times of calibration.

In the golf club 20 according to the present embodiment, the sensor attachment unit 24 includes the flange portions 28 a and 28 b that are fitted into the grooves 11 d and 11 e of the motion detection sensor 10. Therefore, in the golf club 20 according to the present embodiment, it is possible to easily improve the positional reproducibility when attaching the motion detection sensor 10 to the golf club 20 again after detaching the motion detection sensor 10 from the golf club 20.

1.1.2. Motion Detection Sensor

FIG. 6 is a schematic plan view when the motion detection sensor 10 of the motion detection device 100 according to the first embodiment is viewed from the upper surface side. FIG. 7 is a schematic plan view when the motion detection sensor 10 is viewed from the lower surface side. FIG. 8 is a schematic diagram when the motion detection sensor 10 is viewed from an F direction shown in FIG. 6. FIG. 9 is a schematic sectional view of the motion detection sensor 10 taken along the line IX-IX of FIG. 6. FIG. 10 is a schematic sectional view of the motion detection sensor 10 taken along the line X-X of FIG. 7. In FIGS. 6, 7, 9, and 10, X, Y, and Z axes are shown as three axes perpendicular to each other.

The motion detection sensor 10 includes a base (an example of an attached portion) 11, a cover 12, and a sensor unit 13.

The base 11 and the cover 12 form a housing. As shown in FIG. 10, a housing having an internal space 10 a is formed by fixing the cover 12 to the base 11 using a screw 14. The means for fixing the cover 12 to the base 11 is not limited to the screw 14, and may be an adhesive, for example. In addition, if the base 11 and the cover 12 are formed of plastics, the cover 12 may be fixed to the base 11 by welding.

The base 11 functions as an attached portion that is attached to the sensor attachment unit 24. The base 11 has the grooves 11 d and 11 e (an example of the first fitting portion) that are fitted into the flange portions 28 a and 28 b (an example of the second fitting portion) of the sensor attachment unit 24. The motion detection sensor 10 is attached to the golf club 20 by the fitting of the grooves 11 d and 11 e of base 11 into the flange portions 28 a and 28 b.

As shown in FIGS. 7 and 9, the first groove 11 d is formed in a first protrusion 11 b provided on the base 11. The second groove 11 e is formed in a second protrusion 11 c provided on the base 11. The first and second protrusions 11 b and 11 c are provided on the base 11 so as to be parallel to each other along the Y direction.

The first groove 11 d is fitted into the first flange portion 28 a of the sensor attachment unit 24. The second groove 11 e is fitted into the second flange portion 28 b of the sensor attachment unit 24. The motion detection sensor 10 is attached to the sensor attachment unit 24 by the fitting of the first and second grooves 11 d and 11 e into the flange portions 28 a and 28 b of the sensor attachment unit 24.

The first and second grooves 11 d and 11 e are formed such that openings thereof in the X direction face each other. Each of the first and second grooves 11 d and 11 e is open in the −Y direction, and a groove wall 11 f is formed in the opposite direction (+Y direction) (refer to FIG. 10).

The sensor unit 13 functions as a detection unit of the motion detection sensor 10. The sensor unit 13 includes a circuit board 13 a and an electronic device 13 b mounted on the circuit board 13 a.

The circuit board 13 a is fixed to a surface 11 a of the base 11 facing the internal space 10 a by an adhesive or the like.

A plurality of electronic devices 13 b are mounted on the circuit board 13 a. At least one of the electronic devices 13 b is an inertial sensor, such as an acceleration sensor or an angular velocity sensor. The sensor unit 13 is configured so as to be able to analyze the motion in directions of the three axes.

The motion detection sensor 10 according to the present embodiment includes the base 11 as an attached portion that is attached to the sensor attachment unit 24 provided integrally with the exercise equipment unit 22 (grip portion 22 a). Therefore, according to the motion detection sensor 10 of the present embodiment, it is not necessary to calibrate the motion detection sensor 10 whenever the motion detection sensor 10 is attached to the golf club 20. As a result, it is possible to reduce the number of times of calibration. In addition, according to the motion detection sensor 10 of the present embodiment, since it is not necessary to calibrate the motion detection sensor 10 for each swing. As a result, it is possible to reduce the number of times of calibration.

In the motion detection sensor 10 according to the present embodiment, the base 11 includes the grooves 11 d and 11 e that are fitted into the flange portions 28 a and 28 b provided in the sensor attachment unit 24. Therefore, in the motion detection sensor 10 according to the present embodiment, it is possible to easily improve the positional reproducibility when attaching the motion detection sensor 10 to the golf club 20 again after detaching the motion detection sensor 10 from the golf club 20.

1.1.3. Attachment of a Motion Detection Sensor to a Golf Club

FIG. 11 is a diagram schematically showing how the motion detection sensor 10 is attached to the golf club 20. FIG. 12 is a schematic diagram showing a state in which the motion detection sensor 10 is attached to the golf club 20, and corresponds to FIG. 9. FIG. 13 is a schematic diagram showing a state in which the motion detection sensor 10 is attached to the golf club 20, and corresponds to FIG. 10. In FIG. 13, components of the golf club 20 other than the first flange portion 28 a are omitted.

The motion detection sensor 10 is attached to the golf club 20 by moving the motion detection sensor 10 in an arrow direction with respect to the sensor attachment unit 24 of the golf club 20 as shown in FIG. 11 and inserting (so-called slide inserting) the first and second flange portions 28 a and 28 b of the sensor attachment unit 24 into the first and second grooves 11 d and 11 e of the motion detection sensor 10 as shown in FIGS. 12 and 13.

Hereinafter, how the first flange portion 28 a is inserted into the first groove 11 d will be described with reference to FIG. 13. This is the same for the insertion of the second flange portion 28 b into the second groove 11 e.

As the motion detection sensor 10 is moved in an arrow direction (−Y direction) with respect to the sensor attachment unit 24, an end of the first flange portion 28 a of the sensor attachment unit 24 on the +Y direction side begins to be inserted into the groove 11 d first. The first flange portion 28 a is formed such that the thickness (z-direction thickness) t2 of an end of the first flange portion 28 a on the +Y direction side satisfies the relationship of t2<s for the height s of the groove 11 e in the Z direction. By setting the thickness t2 of the end of the first flange portion 28 a on the +Y direction side to be smaller than the height s of the groove 11 d, it is possible to make mounting easy at the start of insertion.

Then, the first flange portion 28 a is inserted into the first groove 11 d is performed. When a protruding portion 29 provided in the first flange portion 28 a comes in contact with the first protrusion 11 b of the base 11 as shown in FIG. 13, the insertion is completed. In this state, when the first flange portion 28 a is formed such that the thickness t1 of an end of the first flange portion 28 a on the −Y direction side satisfies the relationship of t1>t2, the gap between the first groove 11 d and the first flange portion 28 a in the Z direction is narrower on the −Y direction side than on the +Y-direction side. At this time, for example, by making the conditions of t1≅s or t1>s satisfied, the first flange portion 28 a is interposed between the surfaces of the first groove 11 d in the Z direction. Accordingly, it is possible to suppress a situation in which the motion detection sensor 10 falls off the sensor attachment unit 24. In addition, since the rattling of the motion detection sensor 10 in the Z direction with respect to the sensor attachment unit 24 is suppressed, it is possible to obtain appropriate swing data of the golf club 20.

A distance L1 between the first and second flange portions 28 a and 28 b shown in FIG. 11 is equal to, for example, a distance L2 between the first and second grooves 11 d and 11 e shown in FIG. 12 (L1=L2).

More specifically, the distance L1 is a distance between a distal end of the first flange portion 28 a and a distal end of the second flange portion 28 b. The distal end of the first flange portion 28 a is a portion located on the bottom side (−X direction side) of the first groove 11 d when the first flange portion 28 a is fitted into the first groove 11 d. The distal end of the second flange portion 28 b is a portion located on the bottom side (+X direction side) of the second groove 11 e when the second flange portion 28 b is fitted into the second groove 11 e. The distance L2 is a distance between the bottom of the first groove 11 d and the bottom of the second groove 11 e.

As long as the flange portions 28 a and 28 b can be fitted into the grooves 11 d and 11 e, the distance L1 between the first and second flange portions 28 a and 28 b may be smaller than the distance L2 between the first and second grooves 11 d and 11 e (L1<L2).

In addition, for example, the distance L1 between the first and second flange portions 28 a and 28 b may be larger than the distance L2 between the first and second grooves 11 d and 11 e (L1>L2). In this case, by forming the base portions 26 a and 26 b using an elastic material, a force in a direction in which the distance between the flange portions 28 a and 28 b is increased works in a state in which the flange portions 28 a and 28 b are fitted into the grooves 11 d and 11 e (refer to FIG. 12). Therefore, it is possible to more stably attach the motion detection sensor 10 to the sensor attachment unit 24.

In the present embodiment, the motion detection sensor 10 is attached to the golf club 20 by inserting the first and second flange portions 28 a and 28 b of the sensor attachment unit 24 into the first and second grooves 11 d and 11 e of the motion detection sensor 10 so that the first and second flange portions 28 a and 28 b of the sensor attachment unit 24 are fitted into the first and second grooves 11 d and 11 e of the motion detection sensor 10. However, the attachment of the motion detection sensor 10 to the golf club 20 is not particularly limited as long as the motion detection sensor 10 can be fixed to the golf club 20.

The motion detection device 100 according to the present embodiment includes the motion detection sensor 10 and the golf club 20. Therefore, as described above, it is possible to reduce the number of times of the calibration of the motion detection sensor 10.

1.2. Modification Examples

Next, modification examples of the first embodiment will be described. Hereinafter, in a motion detection device according to each modification example of the first embodiment, members having the same functions as the members of the motion detection device 100 according to the first embodiment are denoted by the same reference numerals, and the detailed explanation thereof will be omitted.

1.2.1. First Modification Example

FIG. 14 is a perspective view schematically showing a golf club 20 of a motion detection device 200 according to a first modification example of the first embodiment. FIG. 15 is a perspective view schematically showing the motion detection device 200 according to the first modification example of the first embodiment. In FIGS. 14 and 15, a part of the golf club 20 is not shown.

In the motion detection device 100 described above, as shown in FIGS. 12 and 13, the attachment of the motion detection sensor 10 to the golf club 20 is realized by inserting the first and second flange portions 28 a and 28 b of the sensor attachment unit 24 into the first and second grooves 11 d and 11 e of the motion detection sensor 10 so that the first and second flange portions 28 a and 28 b of the sensor attachment unit 24 are fitted into the first and second grooves 11 d and 11 e of the motion detection sensor 10.

In contrast, in the motion detection device 200, as shown in FIGS. 14 and 15, the attachment of the motion detection sensor 10 to the golf club 20 is realized by fitting a protruding portion 222 (an example of the second fitting portion) provided in the sensor attachment unit 24 into a recessed portion 212 (an example of the first fitting portion) provided in the motion detection sensor 10.

In the golf club 20 according to this modification example, the sensor attachment unit 24 includes the protruding portion 222. The protruding portion 222 is a portion protruding from the grip portion 22 a. The protruding portion 222 may be provided integrally with the grip portion 22 a. In the illustrated example, the protruding portion 222 is provided in a position adjustment portion 230 that is provided integrally with the grip portion 22 a. A hole 224 is provided on the side surface of the protruding portion 222.

In the motion detection sensor 10 according to this modification example, as shown in FIG. 15, the base 11 as an attached portion to which the golf club 20 is attached includes the recessed portion 212. The recessed portion 212 is a recessed portion of the base 11. The motion detection sensor 10 includes a pin 214 that is inserted into the hole 224 provided on the side surface of the protruding portion 222. The pin 214 may be a rod-shaped member, or may be a screw.

When attaching the motion detection sensor 10 to the golf club 20, for example, the golf club 20 and the motion detection sensor 10 are pressed against each other so that the protruding portion 222 of the sensor attachment unit 24 is fitted into the recessed portion 212 of the motion detection sensor 10. Then, the pin 214 is inserted into the hole 224 in a state in which the protruding portion 222 of the sensor attachment unit 24 is fitted into the recessed portion 212 of the motion detection sensor 10. Therefore, it is possible to reliably attach the motion detection sensor 10 to the golf club 20.

In addition, although not shown, a recessed portion may be provided in the sensor attachment unit 24 of the golf club 20, and a protruding portion may be provided in the base 11 of the motion detection sensor 10. That is, when attaching the motion detection sensor 10 to the golf club 20, the protruding portion of the motion detection sensor 10 may be fitted into the recessed portion of the sensor attachment unit 24.

In this modification example, since the motion detection sensor 10 is attached to the golf club 20 by inserting the protruding portion 222 (or a recessed portion) provided in the sensor attachment unit 24 of the golf club 20 into the recessed portion 212 (or a protruding portion) provided in the base 11 of the motion detection sensor 10, it is possible to easily improve the positional reproducibility when attaching the motion detection sensor 10 to the golf club 20 again after detaching the motion detection sensor 10 from the golf club 20.

In addition, as shown in FIGS. 14 and 15, the golf club 20 according to this modification example includes the position adjustment portion 230 for adjusting the position of the sensor attachment unit 24.

The position adjustment portion 230 performs relative movement of the sensor attachment unit 24 (protruding portion 222) with respect to the golf club 20. In the illustrated example, the position adjustment portion 230 moves the sensor attachment unit 24 (protruding portion 222) in the circumferential direction of the axis of the shaft portion 22 b. Accordingly, it is possible to adjust the position of the sensor attachment unit 24 in the circumferential direction of the axis of the shaft portion 22 b. Thus, the position of the protruding portion 222 is adjusted by the position adjustment portion 230.

The position adjustment portion 230 is configured so as to be able to rotate the protruding portion 222 in the circumferential direction of the axis of the shaft portion 22 b. The configuration of the position adjustment portion 230 is not particularly limited. For example, the position adjustment portion 230 may be configured to include a rotating mechanism including a screw or the like.

The position adjustment portion 230 is provided integrally with the exercise equipment unit 22. In the illustrated example, the position adjustment portion 230 is provided integrally with the grip portion 22 a. In addition, although not shown, the position adjustment portion 230 may be provided integrally with the shaft portion 22 b.

In addition, although an example in which the position adjustment portion 230 moves the sensor attachment unit 24 in the circumferential direction of the axis of the shaft portion 22 b has been described herein, the position adjustment portion 230 may move the sensor attachment unit 24 in a direction along the axis of the shaft portion 22 b (axial direction). That is, the position adjustment portion 230 may be configured to be able to adjust the position of the sensor attachment unit 24 in the axial direction of the shaft portion 22 b. In addition, the position adjustment portion 230 may move the sensor attachment unit 24 in both the circumferential direction of the axis of the shaft portion 22 b and the axial direction of the shaft portion 22 b. That is, the position adjustment portion 230 may be configured to be able to adjust the position of the sensor attachment unit 24 in the circumferential direction of the axis of the shaft portion 22 b and the axial direction of the shaft portion 22 b.

In the golf club 20 according to this modification example, since the position adjustment portion 230 for adjusting the position of the sensor attachment unit 24 is included, it is possible to adjust the relative position (fixing position) of the motion detection sensor 10 with respect to the golf club 20. Therefore, for example, it is possible to accurately match the detection axis of the motion detection sensor 10 to a desired direction (for example, a direction perpendicular to the face of the golf club 20). As a result, it is possible to accurately detect the motion of the golf club 20.

In the golf club 20 according to this modification example, the position of the protruding portion 222 fitted into the recessed portion 212 of the motion detection sensor 10 is adjusted by the position adjustment portion 230. Therefore, it is possible to easily improve the positional reproducibility when attaching the motion detection sensor 10 to the golf club 20 again after detaching the motion detection sensor 10 from the golf club 20. In addition, it is possible to accurately detect the motion of the golf club 20 by accurately matching the detection axis of the motion detection sensor 10 to a desired direction.

1.2.2. Second Modification Example

FIG. 16 is a schematic diagram showing a state in which the motion detection sensor 10 is attached to the golf club 20 in a motion detection device 300 according to a second modification example of the first embodiment. FIG. 16 corresponds to FIG. 13. FIG. 17 is a diagram schematically showing the motion detection device 300 according to the second modification example of the first embodiment, and is an enlarged view of an XVII region of FIG. 16.

In the motion detection device 300, as shown in FIGS. 16 and 17, the sensor attachment unit 24 includes a separation preventing protrusion 320 for preventing the separation of the motion detection sensor 10.

Hereinafter, the separation preventing protrusion 320 provided in the first flange portion 28 a will be described with reference to FIGS. 16 and 17. However, although not shown, a separation preventing protrusion is also provided similarly in the second flange portion 28 b.

As shown in FIG. 16, the separation preventing protrusion 320 is engaged with a notch portion 11 g of the motion detection sensor 10 when attaching the motion detection sensor 10 to the sensor attachment unit 24 by inserting the first flange portion 28 a into the first groove 11 d. Since the separation preventing protrusion 320 is engaged with the notch portion 11 g, it is possible to prevent the motion detection sensor 10 from being separated from the sensor attachment unit 24. The notch portion 11 g is provided in the first protrusion 11 b.

In addition, although not shown, the sensor attachment unit 24 may include a mechanism for releasing the engagement of the separation preventing protrusion 320 to the notch portion 11 g when detaching the motion detection sensor 10 from the sensor attachment unit 24.

According to the motion detection device 300 of this modification example, since the sensor attachment unit 24 includes the separation preventing protrusion 320, it is possible to prevent the motion detection sensor 10 from being separated from the golf club 20.

1.2.3. Third Modification Example

FIG. 18 is a perspective view schematically showing a sensor attachment unit 24 of a golf club 20 of a motion detection device according to a third modification example of the first embodiment.

In the golf club 20 of the motion detection device 100 described above, as shown in FIG. 3, the sensor attachment unit 24 includes two base portions (first and second base portions 26 a and 26 b) and two flange portions (first and second flange portions 28 a and 28 b).

In contrast, in the motion detection device according to the third modification example, as shown in FIG. 18, the sensor attachment unit 24 includes three base portions (a first base portion 26 a, a second base portion 26 b, a third base portion 26 c) and three flange portions (a first flange portion 28 a, a second flange portion 28 b, a third flange portion 28 c).

Each of the first base portion 26 a, the second base portion 26 b, and the third base portion 26 c is fixed to the grip portion 22 a. The first base portion 26 a, the second base portion 26 b, and the third base portion 26 c are provided so as to extend in parallel along the axis of the shaft portion 22 b. The third base portion 26 c is provided between the first and second base portions 26 a and 26 b.

The first flange portion 28 a is provided in the first base portion 26 a. The second flange portion 28 b is provided in the second base portion 26 b. The third flange portion 28 c is provided in the third base portion 26 c. The third flange portion 28 c protrudes from the third base portion 26 c.

Although not shown, in the motion detection sensor according to this modification example, three grooves are provided in a base so as to correspond to the first to third flange portions 28 a, 28 b, and 28 c.

In this modification example, by fitting the first to third flange portions 28 a, 28 b, and 28 c into the three grooves provided in the motion detection sensor 10, it is possible to stably attach the motion detection sensor 10 to the golf club 20 so that falling off, positional deviation, rotation, and the like do not occur.

The configuration of the sensor attachment unit 24 is not limited to the example shown in FIG. 3 or FIG. 18. For example, in the sensor attachment unit 24, as shown in FIG. 19, two flange portions (first and second flange portions 28 a and 28 b) may be provided in one base portion 26 a. In the sensor attachment unit 24, as shown in FIG. 20, one flange portion (first flange portion 28 a) may be provided in one base portion 26 a.

2. Second Embodiment 2.1. Motion Detection Device

FIGS. 21 and 22 are perspective views schematically showing a motion detection device 400 according to a second embodiment.

Hereinafter, in the motion detection device 400 according to the second embodiment, differences from the example of the motion detection device 100 will be described, and the explanation of the same points will be omitted.

In the motion detection device 100 described above, as shown in FIG. 1, an exercise equipment to which the motion detection sensor 10 is attached is the golf club 20.

In contrast, in the motion detection device 400, as shown in FIGS. 21 and 22, an exercise equipment to which a motion detection sensor 410 is attached is a tennis racket 420. FIG. 21 shows a state in which the motion detection sensor 410 is attached to the tennis racket 420. FIG. 22 shows how the motion detection sensor 410 is attached to the tennis racket 420.

As shown in FIGS. 21 and 22, the motion detection device 400 includes a tennis racket 420 (an example of the exercise equipment) and a motion detection sensor 410.

In the motion detection device 400, the motion detection sensor 410 attached to the tennis racket 420 detects the motion of the tennis racket 420.

2.1.1. Tennis Racket

As shown in FIGS. 21 and 22, the tennis racket 420 includes an exercise equipment unit 422 and a sensor attachment unit 424.

The exercise equipment unit 422 is a portion used for exercise (tennis game) in the tennis racket 420. The exercise equipment unit 422 includes a grip portion 422 a, a shaft portion 422 b, and a head portion 422 c.

The grip portion 422 a is a portion gripped by the user. The grip portion 422 a is attached to the shaft portion 422 b. The grip portion 422 a covers the shaft portion 422 b. The grip portion 422 a includes a grip body formed of polyurethane or the like, a grip tape wound around the grip body, and an end cap attached to the rear end of the grip body. The grip portion 422 a is attached to the shaft portion 422 b by inserting the shaft portion 422 b into a shaft receiving hole provided in the grip body so that the shaft portion 422 b is fixed.

The shaft portion 422 b is a member for connecting the head portion 422 c and the grip portion 422 a to each other. The shaft portion 422 b has a rod shape, for example. Examples of the material of the shaft portion 422 b include a composite material of carbon fiber and epoxy resin or metal (for example, titanium or aluminum).

The head portion 422 c has a face for hitting a tennis ball. The head portion 422 c is provided at the distal end of the shaft portion 422 b. The head portion 422 c is provided in the shape of a frame, and strings (gut) are stretched thereinside. The head portion 422 c and the shaft portion 422 b are formed in one frame.

The sensor attachment unit 424 is a member for the attachment of the motion detection sensor 410. The sensor attachment unit 424 is provided integrally with the exercise equipment unit 422. In the illustrated example, the sensor attachment unit 424 is provided integrally with the end cap of the grip portion 422 a. In addition, although not shown, the sensor attachment unit 424 may be provided integrally with the grip body, or may be provided integrally with the grip tape.

The configuration of the sensor attachment unit 424 is the same as the configuration of the sensor attachment unit shown in FIG. 3 described above, and therefore the explanation thereof will be omitted.

In the tennis racket 420 according to the present embodiment, the exercise equipment unit 422 and the sensor attachment unit 424 are integrally provided. For this reason, in the tennis racket 420 according to the present embodiment, similar to the golf club 20 described above, positional reproducibility when attaching the motion detection sensor 410 again after detaching the motion detection sensor 410 is high. Therefore, according to the tennis racket 420 of the present embodiment, it is not necessary to calibrate the motion detection sensor 410 whenever the motion detection sensor 410 is attached to the tennis racket 420. As a result, it is possible to reduce the number of times of calibration.

In addition, in the tennis racket 420 according to the present embodiment, it is possible to fix the motion detection sensor 410 more reliably similar to the golf club 20 described above. Accordingly, since it is not necessary to calibrate the motion detection sensor 410 for each swing, it is possible to reduce the number of times of calibration.

The calibration of the motion detection sensor 410 refers to the relative alignment of the detection axis of the motion detection sensor 410 with respect to the tennis racket 420. The calibration of the motion detection sensor 410 is performed by defining a coordinate system (global coordinate system) in which the position of the head portion 422 c when the tennis racket 420 stands still so as to be parallel to the ground is the origin, a target line indicating the target direction of the ball is a first axis, an axis on the horizontal plane perpendicular to the first axis is a second axis, and a vertically upward direction is a third axis, for example.

2.1.2. Motion Detection Sensor

The configuration of the motion detection sensor 410 according to the present embodiment is the same as the configuration of the motion detection sensor 10 shown in FIGS. 6 to 10, and therefore the explanation thereof will be omitted.

2.1.3. Attachment of a Motion Detection Sensor to a Tennis Racket

The motion detection sensor 410 is attached to the tennis racket 420 by moving the motion detection sensor 410 in an arrow direction with respect to the sensor attachment unit 424 of the tennis racket 420 as shown in FIG. 22 so that the first and second flange portions 28 a and 28 b of the sensor attachment unit 424 are inserted into and fit to the first and second grooves 11 d and 11 e (refer to FIG. 9 or the like) of the motion detection sensor 410.

Since the details of the attachment of the motion detection sensor 410 to the tennis racket 420 are the same as the attachment of the motion detection sensor 10 to the golf club 20 shown in FIGS. 12 and 13, the explanation thereof will be omitted.

The motion detection device 400 according to the present embodiment includes the motion detection sensor 410 and the tennis racket 420. Therefore, as described above, it is possible to reduce the number of times of the calibration of the motion detection sensor 410.

2.2. Modification Examples

FIGS. 23 and 24 are perspective views schematically showing a motion detection device 500 according to a modification example of the second embodiment.

Hereinafter, in the motion detection device 500 according to the modification example of the second embodiment, members having the same functions as the members of the motion detection device 400 according to the second embodiment are denoted by the same reference numerals, and the detailed explanation thereof will be omitted.

In the motion detection device 400 described above, as shown in FIG. 22, the sensor attachment unit 424 is provided integrally with the grip portion 422 a.

In contrast, in the motion detection device 500, as shown in FIGS. 23 and 24, the sensor attachment unit 424 is provided integrally with the shaft portion 422 b.

According to the motion detection device 500 of this modification example, it is possible to achieve the same effect as in the motion detection device 400 described above.

In addition, each modification example of the first embodiment described above can be similarly applied to the second embodiment.

3. Third Embodiment 3.1. Motion Detection Device

FIGS. 25 and 26 are perspective views schematically showing a motion detection device 600 according to a third embodiment.

Hereinafter, in the motion detection device 600 according to the third embodiment, differences from the example of the motion detection device 100 will be described, and the explanation of the same points will be omitted.

In the motion detection device 100 described above, as shown in FIG. 1, an exercise equipment to which the motion detection sensor 10 is attached is the golf club 20.

In contrast, in the motion detection device 600, as shown in FIGS. 25 and 26, an exercise equipment to which a motion detection sensor 610 is attached is a baseball bat 620. FIG. 25 shows a state in which the motion detection sensor 610 is attached to the bat 620. In addition, FIG. 26 shows how the motion detection sensor 610 is attached to the bat 620.

As shown in FIGS. 25 and 26, the motion detection device 600 includes the bat 620 (an example of the exercise equipment) and the motion detection sensor 610.

In the motion detection device 600, the motion detection sensor 610 attached to the bat 620 detects the motion of the bat 620.

3.1.1. Bat

As shown in FIGS. 25 and 26, the bat 620 includes an exercise equipment unit 622 and a sensor attachment unit 624.

The exercise equipment unit 622 is a portion used for exercise (baseball game) in the bat 620, and has a round rod shape. The exercise equipment unit 622 includes a grip portion 622 a and a head portion 622 b. The material of the exercise equipment unit 622 is, for example, wood or metal.

The sensor attachment unit 624 is a member for the attachment of the motion detection sensor 610. The sensor attachment unit 624 is provided integrally with the exercise equipment unit 622. In the illustrated example, the sensor attachment unit 624 is provided integrally with the grip portion 622 a of the exercise equipment unit 622.

The configuration of the sensor attachment unit 624 is the same as the configuration of the sensor attachment unit shown in FIG. 3 described above, and therefore the explanation thereof will be omitted.

In the bat 620 according to the present embodiment, the exercise equipment unit 622 and the sensor attachment unit 624 are integrally provided. For this reason, in the bat 620 according to the present embodiment, similar to the golf club 20 described above, positional reproducibility when attaching the motion detection sensor 610 again after detaching the motion detection sensor 410 is high. Therefore, according to the bat 620 of the present embodiment, it is not necessary to calibrate the motion detection sensor 610 whenever the motion detection sensor 610 is attached to the bat 620. As a result, it is possible to reduce the number of times of calibration.

In addition, in the bat 620 according to the present embodiment, it is possible to fix the motion detection sensor 610 more reliably similar to the golf club 20 described above. Accordingly, since it is not necessary to calibrate the motion detection sensor 610 for each swing, it is possible to reduce the number of times of calibration.

The calibration of the motion detection sensor 610 refers to the relative alignment of the detection axis of the motion detection sensor 610 with respect to the bat 620. The calibration of the motion detection sensor 610 is performed by defining a coordinate system (global coordinate system) in which the position of the head portion 622 b when the bat 620 stands still so as to be parallel to the ground is the origin, a target line indicating the target direction of the ball is a first axis, an axis on the horizontal plane perpendicular to the first axis is a second axis, and a vertically upward direction is a third axis, for example.

In the bat 620 according to the present embodiment, as described above, the exercise equipment unit 622 and the sensor attachment unit 624 are integrally provided. Accordingly, for example, in a case where the position of the center of gravity of the bat 620 is not on the central axis of the bat 620 but deviates in a predetermined direction, positional reproducibility when attaching the motion detection sensor 610 again after detaching the motion detection sensor 610 is also high for a direction of the deviation of the position of the center of gravity. Therefore, according to the bat 620 of the present embodiment, also in the case of analyzing the motion of the bat 620 in consideration of the deviation of the position of the center of gravity of the bat 620, it is not necessary to calibrate the motion detection sensor 610 whenever the motion detection sensor 610 is attached to the bat 620. As a result, it is possible to reduce the number of times of calibration.

3.1.2. Motion Detection Sensor

The configuration of the motion detection sensor 610 according to the present embodiment is the same as the configuration of the motion detection sensor 10 shown in FIGS. 6 to 10, the explanation thereof will be omitted.

3.1.3. Attachment of a Motion Detection Sensor to a Bat

The motion detection sensor 610 is attached to the bat 620 by moving the motion detection sensor 610 in an arrow direction with respect to the sensor attachment unit 624 of the bat 620 as shown in FIG. 26 so that the first and second flange portions 28 a and 28 b of the sensor attachment unit 624 are inserted into the first and second grooves 11 d and 11 e (refer to FIG. 9 or the like) of the motion detection sensor 610.

Since the details of the attachment of the motion detection sensor 610 to the bat 620 are the same as the attachment of the motion detection sensor 10 to the golf club 20 shown in FIGS. 12 and 13, the explanation thereof will be omitted.

The motion detection device 600 according to the present embodiment includes the motion detection sensor 610 and the bat 620. Therefore, as described above, it is possible to reduce the number of times of the calibration of the motion detection sensor 610.

In addition, each modification example of the first embodiment described above can be similarly applied to the third embodiment.

4. Fourth Embodiment

FIG. 27 is an external view showing a motion analysis system 1000 according to a fourth embodiment.

The motion analysis system 1000 includes a motion detection device according to the invention. Hereinafter, a case where the motion detection device 100 is used as a motion detection device according to the invention will be described.

As shown in FIG. 27, the motion analysis system 1000 includes the motion detection device 100 and a personal computer (hereinafter, referred to as a “PC”) 700 (an example of a computing device) that analyzes the motion of the golf club 20 based on the detection result of the motion detection device 100.

The PC 700 includes a processing unit 700 b, which includes an input unit 700 a, and a display unit 700 c that displays a processing result. In the illustrated example, the PC 700 as a computing device that analyzes the motion of the golf club 20 is a personal computer. However, the PC 700 may be a portable terminal, such as a tablet terminal or a smartphone. In addition, the motion analysis system 1000 may include a printer 800 as an external output device in order to record the analysis result of the PC 700.

Data transmission and reception between the motion detection sensor 10 and the PC 700 may be performed by wireless communication. Communication between the motion detection sensor 10 and the PC 700 is not limited to the wireless communication, an may be cable communication. Data transmission and reception between the motion detection sensor 10 and the PC 700 may be performed through a removable recording medium, such as an SD card and a USB memory.

FIG. 28 is a functional block diagram of the motion analysis system 1000 according to the fourth embodiment.

As shown in FIG. 28, the motion detection sensor 10 includes an inertial sensor 110, a data storage unit 120 in which data is stored, and a first communication unit 130. The first communication unit 130 includes a transmission unit 132 for transmitting data to the PC 700 and a receiving unit 131 for receiving the data transmitted from the PC 700.

The PC 700 includes the processing unit 700 b and the display unit 700 c. The processing unit 700 b includes a second communication unit 710 and a motion analysis unit 720. The second communication unit 710 includes a receiving unit 711 for receiving data transmitted through the first communication unit 130 of the motion detection sensor 10 and a transmission unit 712 for transmitting the data to the first communication unit 130. The motion analysis unit 720 performs data processing on the acquired detection data of the motion detection sensor 10, and analyzes the motion of the golf club 20. When analyzing the motion of the golf club 20, the motion analysis unit 720 calibrates the motion detection sensor 10. The display unit 700 c displays the analysis result of the motion analysis unit 720. The motion analysis system 1000 includes the printer 800 for outputting the analysis result.

Next, the analysis of the motion of the golf club 20 in the motion analysis system 1000 will be described.

First, the PC 700 calibrates the motion detection sensor 10 attached to the golf club 20. The PC 700 acquires information of the initial state (a position or a posture) of the motion detection sensor 10, and calibrates the motion detection sensor 10.

When the golf club 20 to which a motion detection sensor is attached is swung, the inertial sensor 110 detects the inertial force and transmits detection data to the data storage unit 120. After processing the detection data in a data format that can be transmitted to the PC 700, the processed detection data is stored in the data storage unit 120 until a transmission instruction from the PC 700 is received. The operation of motion analysis is started when a predetermined swing for motion analysis is ended. When a command of analysis start is given to the processing unit 700 b by the input unit 700 a, an instruction to transmit the detection data to the first communication unit 130 from the transmission unit 712 of the second communication unit 710 is wirelessly transmitted. Based on the command received by the receiving unit 131 of the first communication unit 130, the detection data stored in the data storage unit 120 is transmitted to the processing unit 700 b by the transmission unit 132.

The detection data received by the receiving unit 711 of the second communication unit 710 is transmitted to the motion analysis unit 720, and the analysis of the motion of the golf club 20 is performed based on a predetermined analysis program. The analysis result is displayed on the display unit 700 c of the PC 700 as an image, or is recorded and output to a recording medium by the printer 800 as an external output device.

The motion analysis system 1000 according to the present embodiment includes the motion detection sensor 10 and the golf club 20 having the sensor attachment unit 24 provided integrally with the exercise equipment unit 22. Therefore, in the motion analysis system 1000, since it is not necessary to calibrate the motion detection sensor 10 whenever the motion detection sensor 10 is attached to the golf club 20. As a result, it is possible to reduce the number of times of calibration. In addition, according to the motion analysis system 1000 of the present embodiment, since it is not necessary to calibrate the motion detection sensor 10 for each swing. As a result, it is possible to reduce the number of times of calibration.

The embodiments and the modification examples described above are just examples, and the invention is not limited thereto. For example, each embodiment and each modification example can be appropriately combined.

The invention includes substantially the same configuration (for example, a configuration with the same function, method, and result or a configuration with the same object and effect) as the configuration described in each embodiment. In addition, the invention includes a configuration that replaces a unit that is not essential in the configuration described in the embodiment. In addition, the invention includes a configuration capable of achieving the same effects as in the configuration described in each embodiment or a configuration capable of achieving the same object. In addition, the invention includes a configuration obtained by adding a known technique to the configuration described in the embodiment.

The entire disclosure of Japanese Patent Application No. 2015-213415 filed Oct. 29, 2015 is expressly incorporated by reference herein. 

What is claimed is:
 1. An exercise equipment comprising: an exercise equipment unit; and a sensor attachment unit for attachment of a motion detection sensor that detects motion of the exercise equipment unit, wherein the exercise equipment unit and the sensor attachment unit are integrally provided, the sensor attachment unit includes a second fitting portion that is fitted into a first fitting portion provided in the motion detection sensor, the first fitting portion is a recessed portion provided in the motion detection sensor, and the second fitting portion is a protruding portion fitted into the recessed portion.
 2. The exercise equipment according to claim 1, further comprising: a position adjustment unit that adjusts a position of the sensor attachment unit.
 3. The exercise equipment according to claim 2, wherein the position of the second fitting portion is adjusted by the position adjustment unit.
 4. The exercise equipment according to claim 1, wherein the exercise equipment unit includes a grip portion that is gripped by a user, and the sensor attachment unit and the grip portion are integrally provided.
 5. The exercise equipment according to claim 1, wherein the exercise equipment unit includes a shaft portion, and the sensor attachment unit and the shaft portion are integrally provided.
 6. A motion detection sensor, comprising: an attached portion that is attached to a sensor attachment unit provided integrally with an exercise equipment unit, wherein the attached portion includes a first fitting portion that is fitted into a second fitting portion provided in the sensor attachment unit, the first fitting portion is a recessed portion provided in the motion detection sensor, and the second fitting portion is a protruding portion fitted into the recessed portion.
 7. A motion detection device, comprising: an exercise equipment; and a motion detection sensor attached to the exercise equipment, wherein the exercise equipment includes an exercise equipment unit and a sensor attachment unit for attachment of the motion detection sensor, the exercise equipment unit and the sensor attachment unit are integrally provided, the motion detection sensor includes an attached portion that is attached to the sensor attachment unit, the attached portion includes a first fitting portion that is fitted into a second fitting portion provided in the sensor attachment unit, the first fitting portion is a recessed portion provided in the motion detection sensor, and the second fitting portion is a protruding portion fitted into the recessed portion.
 8. A motion analysis system, comprising: the motion detection device according to claim 7; and a computing device that analyzes motion of the exercise equipment based on a detection result of the motion detection device. 